CN112709223A - Cement mixing pile drill bit capable of controlling slurry discharge - Google Patents
Cement mixing pile drill bit capable of controlling slurry discharge Download PDFInfo
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- CN112709223A CN112709223A CN202011566046.1A CN202011566046A CN112709223A CN 112709223 A CN112709223 A CN 112709223A CN 202011566046 A CN202011566046 A CN 202011566046A CN 112709223 A CN112709223 A CN 112709223A
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- iron core
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a cement mixing pile drill bit capable of controlling slurry discharge, which comprises: the drill bit body is provided with a cavity, a slurry input pipe and a slurry output pipe inside the bottom end, the slurry input pipe comprises a horizontal outlet, the inlet end of the slurry output pipe is communicated with the outlet, the drill bit body is provided with a slurry spraying hole communicated with the outlet end of the slurry output pipe, and the cavity is positioned on the left side of the slurry output pipe; a fixed iron core arranged in the cavity; the energizing coil is wound on the fixed iron core by taking the horizontal axis as a rotating shaft; the movable iron core is opposite to the fixed iron core left and right, is arranged in the slurry output pipe and can horizontally move to control the opening and closing of the outlet; and the reset spring is sleeved on the movable iron core, the left end of the reset spring is fixedly arranged, and the right end of the reset spring is connected with the movable iron core. The movable iron core is controlled to move through the fixed iron core with the electric coil and the reset spring, the cement mixing pile machine is controlled to spray the cement to be opened and closed, the cement paste is controlled to flow out of the cement spraying hole from the bottom end of the drill bit, and cement waste caused when an empty pile section or premixed subsides is avoided.
Description
Technical Field
The invention relates to the technical field of mixing pile machines, in particular to a cement mixing pile drill bit capable of controlling slurry discharge.
Background
Conventional cement stirring stake passes through cement stirring stake machine, with cement and soil intensive mixing in the ground depths, through the physics, the chemical reaction and a high strength composite foundation pile body that forms, the pile body that forms and the soil body around the stake form composite foundation, increase the foundation bearing capacity, improve foundation overall stability, reduce inhomogeneous settlement. Therefore, the cement mixing pile is a novel high-quality high-efficiency excellent pile suitable for soft soil areas.
The conventional cement mixing pile machine mainly has the following ways of controlling the opening and closing of cement slurry spraying: and a water faucet valve at the top of the drill rod is controlled by controlling the slurry feeding pressure of the background slurry pump.
The existing method for controlling the opening and closing of the cement slurry spraying has the following defects: firstly, the opening and closing are controlled to have delay, and timely control cannot be realized; and secondly, after the mortar pump or the drill rod top faucet is closed, more cement slurry is still retained in the drill rod along the depth direction to be discharged.
The first disadvantage is mainly aimed at a cement mixing pile machine which is not provided with any controllable opening and closing device, and when the pile machine is displaced and a drill bit is cleaned for a short intermittent period, the pile machine can only keep a guniting state until the next pile is constructed. When the guniting needs to be stopped completely, the mortar pump can be communicated and closed only by coordinating with operators of the background slurry pool, the mortar pump is generally far away from the operators of the background slurry pool, and the inconvenience in communication between the mortar pump and the background slurry pool is determined by the spatial distance. The second disadvantage is that after the water tap at the top of the drill rod is closed, cement slurry still exists in the drill rod, and the cement slurry still flows out of the slurry outlet hole at the drill bit until the cement slurry in the drill rod completely flows out, so that the waste of the cement slurry is caused.
Disclosure of Invention
The invention aims to provide a cement mixing pile drill bit capable of controlling slurry discharge, so as to solve one or more technical problems in the prior art and provide at least one beneficial selection or creation condition.
The technical scheme adopted for solving the technical problems is as follows:
the invention provides a cement mixing pile drill bit capable of controlling slurry discharge, which comprises:
the inner part of the bottom end of the drill bit body is provided with a cavity, a slurry input pipe and a slurry output pipe; the slurry input pipe comprises a horizontal outlet, and the inlet end of the slurry output pipe is communicated with the outlet; the drill bit body is provided with a guniting hole, and the outlet end of the slurry output pipe is communicated with the guniting hole; the cavity is positioned on the left side of the slurry output pipe;
a fixed iron core fixed inside the cavity;
the energizing coil is wound on the fixed iron core by taking a horizontal axis as a rotating shaft;
the movable iron core is arranged opposite to the fixed iron core left and right, is arranged in the slurry output pipe and can horizontally move left and right to control the opening and closing of an outlet;
the return spring is sleeved on the movable iron core; the left end of the reset spring is fixedly arranged, and the right end of the reset spring is connected with the movable iron core.
The invention has at least the following beneficial effects: the movable iron core is controlled to horizontally move leftwards through the fixed iron core with the electric coil so as to open the outlet, and the movable iron core is driven to horizontally move rightwards by utilizing the reset spring when the electrified coil is powered off so as to block the outlet, so that the opening and closing of the cement mixing pile machine in a guniting mode are controlled; and, set up the cavity in the bottom of drill bit body for deposit fixed iron core, conveniently fixed iron core carries out magnetic control to the movable iron core in the thick liquid output tube, realizes from drill bit bottom department control grout and flows from the whitewashing hole, avoids causing cement waste when empty pile section or ready-mixed sink. The outlet is horizontally arranged, so that the movable iron core can easily block the outlet through horizontal movement.
As a further improvement of the technical scheme, the movable iron core is provided with a blocking head for blocking the outlet. Set up the shutoff head on movable core, can more effectual jam export.
As a further improvement of the technical scheme, the end face of the blocking head is provided with a chamfer. The chamfer is arranged on the plugging head, so that the plugging head is in closer contact with the outlet, and the sealing and plugging effect is enhanced.
As a further improvement of the technical scheme, the blocking head is made of rubber. By adopting the sealing plug made of rubber, when the outlet is sealed, the outlet can be tightly sealed by utilizing the deformation characteristic of the rubber sealing plug, so that the leakage is avoided.
As a further improvement of the technical scheme, the slurry output pipe is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the movable iron core horizontally penetrates through the sealing ring. The design of the sealing groove and the sealing ring is adopted, so that the sealing effect is achieved, the movable iron core can be limited, and the movable iron core can only move horizontally.
As a further improvement of the above technical scheme, the electrical coil is provided with an access wire, the drill bit body is provided with a wire hole for the access wire to run, the wire hole is located above the cavity, and the wire hole is communicated with the cavity. Set up the line hole with the cavity intercommunication in this internal setting of drill bit, be favorable to electrical coil's access line to carry out circuit layout, obtain the electric energy from the drill bit body outside to ensure that electrical coil can normally work.
As a further improvement of the technical scheme, the left end of the return spring is connected with the inner wall surface of the slurry output pipe. The reset spring is arranged in the slurry output pipe, so that the whole structure is more compact, and manufacturing materials are saved.
Drawings
The invention is further described with reference to the accompanying drawings and examples;
FIG. 1 is a schematic structural diagram of an embodiment of a controllable discharging cement mixing pile drill bit according to the present invention in a non-guniting state;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of an embodiment of a controllable discharging cement mixing pile drill bit according to the present invention in a guniting state;
fig. 4 is an enlarged view of a portion B in fig. 3.
The drawings are numbered as follows: 100. a drill bit body; 110. a stirring blade; 120. a drill bit; 130. a wire hole; 140. a cavity; 150. mounting a box; 210. a slurry input pipe; 220. a slurry output pipe; 230. an outlet; 300. an electrified coil; 310. an access line; 400. fixing the iron core; 500. a movable iron core; 510. plugging a plug; 600. a return spring; 700. and (5) sealing rings.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If any description to first, second and third is only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 4, several embodiments of the cement mixing pile drill bit capable of controlling grout discharge according to the present invention will be described.
An embodiment of the present invention provides a cement mixing pile drill bit capable of controlling grout discharge, including: the drill bit comprises a drill bit body 100, a fixed iron core 400, an energizing coil 300, a movable iron core 500 and a return spring 600.
Wherein, the drill bit body 100 is provided with a drill bit 120 and a stirring blade 110, and is connected with a drill rod when in use, so that the drill bit body 100 can rotate around a vertical axis. The interior of the bottom end of the bit body 100 is provided with a cavity 140, a slurry inlet pipe 210 and a slurry outlet pipe 220 all located above the bit tip 120.
The slurry inlet pipe 210 includes an outlet 230 in a horizontal shape and an inlet to which the slurry is delivered; the inlet end of the slurry outlet pipe 220 communicates with the outlet 230. The drill body 100 is provided with a guniting hole, and the guniting hole may be formed in a side surface of the drill body 100. The outlet end of the slurry outlet pipe 220 is communicated with the guniting hole, so that the cement slurry flows from the slurry inlet pipe 210 to the slurry outlet pipe 220, and is finally sprayed to the outside through the guniting hole, so that the drill bit body 100 can stir the cement slurry through the stirring blades 110. The cavity 140 is located at the left side of the slurry outlet pipe 220.
The stationary core 400 is fixed inside the cavity 140. Specifically, a fixed mounting box 150 is disposed inside the cavity 140, and the mounting box 150 may be connected to the drill body 100 through a welding process or a screw connection. The stationary core 400 is provided in the mounting case 150.
The electrical coil 300 is wound around the fixed iron core 400 by taking a horizontal axis as a rotating shaft, and according to the right-hand screw rule, when the electrical coil 300 is energized, the left end and the right end of the fixed iron core 400 are respectively an N pole and an S pole or an S pole and an N pole, so that ferromagnetic substances such as iron can be magnetically attracted.
The energizing coil 300 is located within the mounting case 150. The electrical coil 300 is provided with an access line 310, the drill body 100 is provided with a line hole 130 for the access line 310 to run, the line hole 130 is located above the cavity 140, and the line hole 130 is communicated with the cavity 140. The mounting box 150 is provided with a hole, so that the access line 310 can pass through the cavity 140 and the line hole 130 in sequence, and is connected with a power supply control box on the operating platform along the drill rod line above, so as to ensure that the electrified coil 300 can be electrified to work.
The movable iron core 500 and the fixed iron core 400 are arranged oppositely left and right, specifically, the movable iron core 500 is located on the right side of the fixed iron core 400. The movable iron core 500 is arranged in the slurry outlet pipe 220, and the movable iron core 500 can horizontally move left and right to control the opening and closing of the outlet 230.
Specifically, slurry outlet pipe 220 is equipped with the seal groove, be equipped with sealing washer 700 in the seal groove, movable iron core 500 level is passed sealing washer 700 for movable iron core 500 can be effectively supported, and horizontal migration carries out. And the sealing effect can be enhanced and leakage can be avoided by arranging the sealing ring 700. In this embodiment, the mounting box 150 is provided with an opening allowing the movable iron core 500 to pass through, the slurry outlet pipe 220 is provided with an over-shaft opening, the left end of the movable iron core 500 sequentially passes through the over-shaft opening and the opening, so that the movable iron core 500 can be inserted into the mounting box 150 from the slurry outlet pipe 220, as shown in fig. 2 and 4, and a sealing groove and a sealing ring 700 are provided at the over-shaft opening to exert a sealing effect for sealing a gap between the movable iron core 500 and the over-shaft opening to prevent water slurry from flowing into the cavity 140 through the over-shaft opening.
After the power coil 300 is energized, the fixed core 400 generates magnetism, which can generate magnetic force to the movable core 500 to urge the movable core 500 to move toward the fixed core 400, so as to remove the plugging of the movable core 500 to the outlet 230, at this time, the cement slurry can flow from the slurry inlet pipe 210 to the slurry outlet pipe 220, as shown in fig. 3 and 4.
In this embodiment, the movable core 500 is provided with a blocking head 510 for blocking the outlet 230. The end face of the plugging head 510 is provided with a chamfer. The plugging head 510 is a plugging head made of rubber. The blocking head 510 may be fixed at the right end of the movable core 500 by screws. When the outlet 230 is blocked, the blocking head 510 which is made of rubber and provided with a chamfer can better block the outlet 230 by utilizing the deformation characteristic so as to prevent leakage.
The return spring 600 is sleeved on the movable iron core 500; the left end of reset spring 600 is fixed setting, reset spring 600's right-hand member with movable iron core 500 is connected. Because the left end of reset spring 600 is fixed motionless, the right-hand member of reset spring 600 can exert the effort of going right to movable iron core 500 so, so after circular telegram coil 300 loses the electricity, movable iron core 500 moves to the right under reset spring 600's effect to block up export 230, blocked grout outflow completely, thereby make grout unable flow to thick liquid output tube 220, as shown in fig. 1, fig. 2.
In this embodiment, the left end of the return spring 600 is connected to the inner wall surface of the slurry outlet pipe 220, and the return spring 600 is disposed in the slurry outlet pipe 220, so that the overall structure is more compact, and the manufacturing material is saved. Of course, reset spring 600 can set up outside thick liquid output tube 220, and the last stopper that sets up of movable iron core 500 and be located outside thick liquid output tube 220, reset spring 600's right-hand member and stopper butt, reset spring 600's left end and mounting box 150's lateral surface butt, because mounting box 150 is immobile, so reset spring 600 can exert the effort of right to movable iron core 500.
This cement mixing stake drill bit can horizontal reciprocating motion through the fixed iron core of band-pass electric coil and the movable iron core of reset spring control, and the control cement mixing stake machine whitewashing is opened and close, realizes flowing from the whitewashing hole from drill bit bottom department control grout, avoids causing cement extravagant when empty pile section or ready-mixing sink. And moreover, a normally closed valve is formed by the fixed iron core with the electric coil, the movable iron core and the return spring, and the effect of controlling the opening and the stopping of the guniting at any time can be achieved.
During the construction process of the cement mixing pile, when the pile section is empty, the power supply can be cut off, the electrified coil is powered off, the movable iron core blocks the outlet under the action of the reset spring, the cement slurry stops flowing out continuously, the cement mixing pile is mixed and sunk, and the purpose of stopping slurry and mixing at any time is achieved.
When the pile top elevation of the test pile is drilled, a power supply of the electrified coil is switched on, the outlet is opened through the attraction of the fixed iron core to the movable iron core, cement paste begins to flow out, the stirring pile is rotated to drill and spray the cement paste, and grouting stirring can be selected at any time; after the drilling guniting pile is formed to reach the designed pile length or layer position, the stirring pile starts to lift and stir guniting, when the depth reaches the pile top elevation of the test pile, the power supply of the electrified coil is cut off, the movable iron core plugs the outlet under the action of the reset spring, and cement paste stops flowing out until the stirring head is lifted to the ground.
When the cement mixing pile adopts a 'two-mixing one-spraying' construction process, the power supply of the electrified coil can be cut off when the cement mixing pile is pre-mixed and sinks, and the cement paste stops flowing out; after the drilling guniting pile is formed to reach the designed pile length or layer position, the power supply of the electrified coil is switched on, the outlet is opened, cement paste flows out, and the stirring pile starts to lift, stir and guniting.
The pile driver can stop grouting and wait in intermittent pause states such as shifting of the pile driver, cleaning of a drill bit and the like, and the power supply of the electrified coil can be switched on at any time when the next pile position is constructed, so that grouting can be carried out again.
To sum up, this cement mixing stake drill bit simple structure, the installation is dismantled conveniently, easy to overhaul the maintenance. The slurry can be stopped and stirred at any time in the empty pile section or the premixing sinking section, thereby reducing the cement waste and saving the construction cost. On the basis of ensuring the quality of the pile body, the cement mixing pile drill bit optimizes the operation space of the cement mixing pile for different construction working conditions and processes, avoids unnecessary procedures such as premixing sinking or hollow pile guniting and the like, and improves the construction efficiency of the cement mixing pile.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (7)
1. The utility model provides a steerable cement stirring stake drill bit that goes out thick liquid which characterized in that includes:
the drill bit comprises a drill bit body (100), wherein a cavity (140), a slurry input pipe (210) and a slurry output pipe (220) are arranged inside the bottom end of the drill bit body; the slurry inlet pipe (210) comprises a horizontal outlet (230), and the inlet end of the slurry outlet pipe (220) is communicated with the outlet (230); the drill bit body (100) is provided with a guniting hole, and the outlet end of the slurry output pipe (220) is communicated with the guniting hole; the cavity (140) is positioned at the left side of the slurry output pipe (220);
a fixed iron core (400) fixed inside the cavity (140);
an energizing coil (300) wound around the fixed core (400) with a horizontal axis as a rotation axis;
the movable iron core (500) is arranged opposite to the fixed iron core (400) in the left-right direction, the movable iron core (500) is arranged in the slurry output pipe (220), and the movable iron core (500) can horizontally move left and right to control the opening and closing of the outlet (230);
a return spring (600) fitted over the movable iron core (500); the left end of reset spring (600) is fixed setting, the right-hand member of reset spring (600) with movable iron core (500) are connected.
2. The controllable discharging cement mixing pile drill bit as recited in claim 1, characterized in that the movable iron core (500) is provided with a plugging head (510) for plugging the outlet (230).
3. The controllable discharging cement mixing pile drill bit as recited in claim 2, characterized in that the end face of the plugging head (510) is provided with a chamfer.
4. The controllable discharging cement mixing pile bit as recited in claim 3, characterized in that the plugging head (510) is a plugging head made of rubber.
5. The drill bit for cement mixing pile capable of controlling the discharge of slurry according to any one of claims 1 to 4, wherein the slurry outlet pipe (220) is provided with a sealing groove, a sealing ring (700) is arranged in the sealing groove, and the movable iron core (500) horizontally penetrates through the sealing ring (700).
6. A cement mixing pile drill bit capable of controlling grout outlet according to claim 5, characterized in that the electrical coil (300) is provided with an access line (310), the drill bit body (100) is provided with a line hole (130) for routing the access line (310), the line hole (130) is located above the cavity (140), and the line hole (130) is communicated with the cavity (140).
7. The controllable cement mixing pile bit of mud according to claim 6, characterized in that, the left end of the return spring (600) is connected with the inner wall surface of the mud output pipe (220).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011566046.1A CN112709223A (en) | 2020-12-25 | 2020-12-25 | Cement mixing pile drill bit capable of controlling slurry discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011566046.1A CN112709223A (en) | 2020-12-25 | 2020-12-25 | Cement mixing pile drill bit capable of controlling slurry discharge |
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| Publication Number | Publication Date |
|---|---|
| CN112709223A true CN112709223A (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011566046.1A Pending CN112709223A (en) | 2020-12-25 | 2020-12-25 | Cement mixing pile drill bit capable of controlling slurry discharge |
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| Country | Link |
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| CN (1) | CN112709223A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652913A (en) * | 2022-05-26 | 2023-01-31 | 广东建联建筑设计有限公司 | Multistage cement mixing stake supporting construction |
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| US20080041630A1 (en) * | 2006-08-18 | 2008-02-21 | Atlas Copco Secoroc Llc | Earth bit having a pressure relief valve |
| CN104032733A (en) * | 2013-03-06 | 2014-09-10 | 上海城地建设股份有限公司 | Cement soil mixing pile device capable of switching up and down to spray slurry and construction method |
| CN207553977U (en) * | 2017-11-26 | 2018-06-29 | 深圳市稳健基础工程有限公司 | A kind of mixing pile drill bit that can adjust cement grout spouting velocity |
| CN208123579U (en) * | 2018-03-25 | 2018-11-20 | 江苏特尔维斯智能科技有限公司 | A kind of fast turning on-off tap |
| CN109930607A (en) * | 2019-04-25 | 2019-06-25 | 江苏省无锡探矿机械总厂有限公司 | A kind of band opens and closes the dual slurry injection nozzle device of function certainly |
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2020
- 2020-12-25 CN CN202011566046.1A patent/CN112709223A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080041630A1 (en) * | 2006-08-18 | 2008-02-21 | Atlas Copco Secoroc Llc | Earth bit having a pressure relief valve |
| CN104032733A (en) * | 2013-03-06 | 2014-09-10 | 上海城地建设股份有限公司 | Cement soil mixing pile device capable of switching up and down to spray slurry and construction method |
| CN207553977U (en) * | 2017-11-26 | 2018-06-29 | 深圳市稳健基础工程有限公司 | A kind of mixing pile drill bit that can adjust cement grout spouting velocity |
| CN208123579U (en) * | 2018-03-25 | 2018-11-20 | 江苏特尔维斯智能科技有限公司 | A kind of fast turning on-off tap |
| CN109930607A (en) * | 2019-04-25 | 2019-06-25 | 江苏省无锡探矿机械总厂有限公司 | A kind of band opens and closes the dual slurry injection nozzle device of function certainly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652913A (en) * | 2022-05-26 | 2023-01-31 | 广东建联建筑设计有限公司 | Multistage cement mixing stake supporting construction |
| CN115652913B (en) * | 2022-05-26 | 2023-06-16 | 广东建联建筑设计有限公司 | Multistage cement stirring stake supporting construction |
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